Method and mold for making globes



3 vSheets-Sheet l J. C. SMITH METHOD AND MOLD FOR MAKING GLOBES April24, 1934.

A ril 24, 1934. J. c. SMITH METHOD AND MOLD FOR MAKING GLOBES OriginalFiled July 27. 1929 a 3 Sheets-Sheet 2 llanluununl 15/272 afmzifi April24, 1934. I J c $M|TH 1,956,161

METHOD AND HOLD FOR MAKING GLOBE 5 Original Filed July 27,1929 :5sheets-sheet 5 Patented Apr. 24, 1934 UNITED STATES PATENT OFFICEApplication July 27, 1929, Serial No. 381,413 Renewed May 25, 1933 14Claims.

My invention relates to globes or other articles of glass such ascanteen globes or other shapes designed particularly for use inadvertising certain goods as well as for illuminating purposes,

a common form being globes used in connection with pumps for gas fillingstations, although not restricted to this use nor to the canteen shapeor type of globe.

Heretofore, such globes have been made in one piece, being blown toshape in the usual way of blowing glass and then etched or sand blastedto produce a particular design upon the exterior surface thereof whichis painted in one or more colors indicating a design of trade-markadvertising certain goods. This left the paint exposed to weatherconditions, with the result that in addi tion to breakage, the painteddesign soon became disfigured or mutilated and either requiredreplacement or redecorating. Of course, the 2s painting or ornamentingon the globe might be for artistic or other purposes.

In accordance with the present invention I produce a globe in sectionswhich are interiorly etched or sand blasted with a particular design andpainted and then the sections are secured together so that theornamenting is located interiorly and thereby protected from exposure toweather conditions. For this purpose I provide a novel form of mold inwhich the globe is blown in such a manner as to produce an irregularsurface with readily breakable points or lines encircling the globe,preferably in the form of ridges so that the globe after being blown maybe separated into sections capable of being readily united to producethe complete globe after the interior surfaces of the sections have beenpainted or otherwise ornamented.

It is also the object of the invention to provide a novel method ofproducing a globe of the character stated, and in conjunction therewithI use a mold including a separable ring section adapted to be associatedwith the sections of the mold in such a way as to produce the readilybreakable ridges or lines of separation when the globe is blown, themolten glass in flowing over the ridges being such as to form anobstruction to the flow so that the wall at these points will berelatively thin, thereby facilitating separation of the sections to belater secured together in completing the globe.

A still further object of the invention is to provide a globe in whichthe sections when secured together will be practically as strong, if notstronger, than a one-piece globe, so as to resist breakage, whileadditional means is provided to span the joint between the sections andfurther insure against separation of the sections of the globe.

Other objects and advantages will be apparent as the descriptionproceeds.

In the accompanying drawings:

Fig. l is a plan view of a mold constructed in accordance with theinvention, the sections thereof being shown closed in full lines and onesection opened out in dotted lines;

Fig. 2 is a vertical sectional view taken on the lines 22 of Fig. l;

Fig. 3 is a vertical sectional view at right angles to Fig. 2 and takenon the line 3-3 of Fig. 1;

Fig. 4 is a horizontal sectional view taken on the line 4-4 of Fig. 3;

Fig. 5 is an enlarged fragmentary vertical sectional view taken on theline 55 of Fig. 3;

Fig. 6 is a sectional view of a globe showing the form in which it isblown; 7 5,

Fig. 7 is an enlarged fragmentary sectional view of a portion of theglobe;

Fig. 8 is an enlarged fragmentary sectional view showing the manner ofjoining the sections of the globe;

Fig. 9 is an enlarged fragmentary sectional view showing the neckportion of the globe;

Fig. 10 is an elevation of a completed globe with a holder designedtoretain the sections thereof in assembly in addition to supporting theglobe and serving as anchoring means on a globe holder;

Fig. 11 is an edge elevation of the globe;

Fig. 12 is a vertical sectional View of the completed globe;

Fig. 13 is an enlarged fragmentary sectional view taken on the line 13l3of Fig. 10;

Fig. 14 is an enlarged fragmentary inside elevation looking toward theneck portion of the globe;

Fig. 15 is a sectional view taken on the line 15-15 of Fig. 9; and

Fig. 16 is an enlarged sectional View showing another way of forming theglobe sections and connecting the same.

Referring to the drawings in detail, there is shown a glass moldcomprising the sections 1'7 and 18 which are usually of metal and whichare shown provided at one end of each with a pair of pivot ears 19connected by a pivot or pintle 20 by which the sections of the mold arepivotally connected. Each section is also provided with a handle 21 atits free end and one section is provided with one or more latches 22designed to engage corresponding keepers 23 on the other sections so asto hold the sections in closed position and to permit them to be readilyseparated when desired.

The mold sections are adapted to be mounted on a base 23 also of metal,which base has a raised portion 24 undercut as indicated at 25 to fitcorresponding grooves 26 in the coacting sections 17 and 18 of the mold,as shown more particularly in Fig. 2 of the drawings. The mold sectionsas illustrated are hollowed out according to the shape and design of theglobe to be produced and in the illustration, they are so formed as toproduce what is known in the art as a can-' teen globe, but I do notdesire to be limited to this particular shape in which the globe isround and relatively flat.

At a suitable point around the circumference of the globe at which thesame is to be separated into sections, means is provided for causing theformation of readily breakable ridges, these being primarily in the formof a groove outwardly of the inner face of the mold or substantially inline therewith, together with ribs on either side thereof formingrelatively sharp angular portions or edges over which the molten glassmust flow during the blowing operation so as to restrict the amount offlow and consequently the thickness of the glass at these points wherebyto facilitate rasping and breaking of the globe into sections which areto be later secured together after being painted or ornamented toproduce the complete globe.

In the form illustrated, the coacting faces of the mold sections 1'7 and18 are recessed as indi cated at 27, these recesses coacting to form aninterior annular groove, although the cut may be made entirely throughthe walls of the sections instead of extending partially therethroughwith annular outer shoulders 28 terminating in spaced relation to theouter faces of the mold sections in the embodiment shown andparticularly as illustrated in Fig. 4 of the drawings.

Also, it will be understood that the groove may extend horizontallyinstead of vertically, depending upon the design of the globe andwhether the sections are to be joined vertically, horizontally orotherwise. One illustration of a globe with the sections joinedhorizontally would be that depicting a red crown, but in either form thesame principle prevails.

The groove formed by the coacting recesses 2'7 is adapted to receive aridge producing collar which includes a stationary section 29 which isanchored to the base plate 23 as indicated at 30, and a movable orslidable section 31 which is slidably mounted on the base plate 23. Inthe form illustrated, more particularly in Figures 3 and 5 of thedrawings, the movable section 31 has a dovetailed extension 32 fitting acorresponding groove 33 in the base 23 and this movable section has ahandle 34 by which it may be shifted toward and away from the stationarysection 29 so as to restrict or enlarge the space 35 between the upperends of the ring sections at the neck portion 36 of the mold, at whichpoint the sections are recessed as indicated at 3"! so as to form theneck of the globe, which may be spirally grooved to form a threaded neckon the globe.

In producing the globe, a blowpipe 88 of the usual or any preferred typehaving a mouthpiece 39', a handle 40 of cork or other heat insulatingmaterial, and an enlargement 41' at its free end, is dipped into themolten glass so as to apply thereto a blank l2 of such glass. The moldsections are then separated by the handles 21 after the movable ringsection 31 is slid outwardly by the handle 34 to separate it from thestationary section 29 at the space 35 and then the blank of glass on theblowpipe is inserted into the mold, after which the ring section 31 ismoved back into position limited by the shoulder 32 produced at theinner end of the recess 33 and the adjacent end of the stationary ringsection 29, the mold sections closed by the handles 21 and the catches22 engaged. In the event that a globe of canteen shape is to beproduced, t -e blank of glass is first tapped on the sides thereof tosecure initial shaping of the blank according to the shape of the globeto be produced, thus securing more uniformity of wall and facilitatingthe blowing operation in accordance with my present method.

As illustrated, the ring is provided with an internal groove 39substantially V-shaped in cross section, thus providing sharp angularprojections or ribs 40 on either side projecting inwardly of the face ofthe mold cavity. The sharp angular groove may, if desired, projectslightly outwardly of the face of the mold cavity, but this is notessential. The blowing is then carried out in the usual way, forcing theglass to form the globe wall 41 of substantially uniform thicknesswithin the cavity and conforming to the contour thereof. As the blowingoperation is carried on, the free end of the blowpipe, which isinitially inserted into the cavity of the mold through the neck portionthereof, is gradually Withdrawn and may be bent down to a horizontalposition, if desired, as shown in Figure 3 of the drawings. Thecontinued blowing produces the neck portion 42, which may be threaded toconform to the grooves in the neck portions and as the glass is drawnout, 3,

able points by which the globe as blown may be rasped or cut andseparated into sections. This is due to the flow of the molten glassover the shoulders which are comparatively abrupt and substantially atright angles to the axis of the mold and thus the globe produced thereinis restricted or obstructed and the flange formation is tapered asclearly shown in the drawings.

A similar result is produced by the flow of the glass into the crotch orangular portion of the groove 39 in the ring, thus resulting in asubstantially V-shaped formation at the medial portion of the globe asindicated at 45 with a readily breakable portion 46 along the line ofwhich the globe may first be separated. into sections by raspor cuttingif so desired.

Substantially, the portion 45 is removed either up to the flanges 44 asindicated in Figure 8 of the dra ings, or up to the angular points 47 asindicated more particularly in Figure 16 of the drawings, so as toprepare the edge portions of the mold sections for joining themtogether. Where the separation is made at the angular points of theflanges 44, the surfaces 48 are ground down in the usual Way so as to befitted together and cemented subsequent to the painting or ornamentingof the sections interiorly, as indicated at 4.9 in Figure 8 of thedrawings. If the separation is accomplished at the angular points 4'7,the flanges are thus provided with lips or rims 5i) producing arelatively Wide annular cavity 51 "between the sections for accommodat-Ling-the'cement. -'In additioma strap 52 of metal may be used to connectthe sections, being formed to fit over the "flanges 4'4:andboltedlthrough the 'sectionsas indicated at '53 In addition to the-separation of the globe into sections, the neck portion of the :mold isprovided with a relatively-deep recess 54 resulting in the annulargroove formation 55 in the neck portion of -'the globe with a relativelythin -'and "breakable Wall permitting the neck :portion :of "the-'-gl'obe to be severed and groundidown .as already explained. Theseparatedsections'are then etched or sand blasted 'interi'orly as'indicated'at 56 to be coated "with paint-or otherwise 'or'name'nted asindicated at "5'7,"-so as 'toproduce this ornamenting upon-the interiorwall. 'This' 'is pre'f 'erablycarried-out in-accordance with-theprocessdescribed in my prior "Patent'No. 1,6055570 dated *November '2, "1926}but I 'do not desire' to' belimited to'theuse'of-suchparticular-process. "Thus, when the sections of the globe are-connected"or cemented together as described, the paint will be :protected fromthe weather and last almost *in- "definitely.

As an additional means for 'connecting 'thesections oftheglobeand-holding them in assemb'le'd relation, a" threaded I metallicneck 'band :58 .is securedon to the threaded neckportion of 'i'the globeand this band has'za flange "59 adapted :to be secured in'a holder 60'asby means ofscrews or other fasteners "61. 'Thus,the band in addition toserving as means for "fastening the globe 'to a pump-or head-"of a lamppostgalsof'servesas -means-topositivelyholdthe sections of the-globe inassembled relation in addition to lthescementing means at the joint andthe securing :means at a point diametrically opposite the neck asrepresented by the strap or connector 52 and the bolts 53 attaching theends thereof to the respective sections of the globe. Incidentally, it

may be stated that the flanges 44 preferably taper and gradually widentoward the neck opening while the neck portion is also substantiallythicker, as clearly shown in the drawings and particularly in Figure 15.As a matter of fact, the flanges 44 at the neck portion arecomparatively short, but the joint is formed as shown in Figure 8 or asshown in Figure 16, according to the points at which the globe isseparated into sections.

It will thus be seen that I have provided a novel form of sectionalglobe which may be blown by those specializing in this field, inaccordance with the well known methods, using a mold of novelconstruction and design as above described, the resulting formationbeing such that the globe is provided with one or more readily breakableportions or lines encircling the same Where glass is particularly thinso that the globe may be divided into sections.

By this means the interior surfaces of the sections are renderedparticularly accessible for decorating or ornamenting, such as byetching or sand blasting and then painting into the depressed surfacesthus formed, whereas this has not been possible heretofore owing to thefact that the globes have always been produced in one piece and were notaccessible interiorly for ornamenting and thereby necessitated exteriorornamentation which quickly deteriorated when exposed to all sorts ofweather conditions. The mold is so constructed that its structure iscomparatively simple as well as its assemblage,

I and the operation in conjunction with the blowsing such astozfacilitate theinsertion of theblank, the'i'blowing, separation of thesections of .the -mold sand the :removal of the bl-own globe forsep'arationinto sections :to be subsequently .connected zafter' being:etched 'and'painted-sor: otherwise zornamented.

While v.I have tillustrated a :preferred embodiqnent :of my invention,many .modifications may he ima'de without departing from the spiritofithe invention, and 11 tdo'not wish to be .limited to the precisedetails of -'"c'onstr uction-set forth, 'i'but'desire itoravailimyself-of all changes Within theiscopeof'the.appended'claims.

:Having thus :described :my invention, what 'I :claimisnew. and desireto secure'by LettersiPatent-(of "the United "States is:

1. Themethod ofzproducing a-glass globe con- :sisting in blowing a:globe 'with a readily break able point, 'separatingtheglobe intosections at said moint-candsubsequently uniting the sections.

l 2. methodot producing. asectional globe consisting fin blowing a:globe with readily breaka'ablellines of demarcation, separating theglobe :in'to*-sections,ornamenting the sections interior- 1yandasubsequently connecting the sections.

3. Iheamethod of producing -a glass globe consistinginblowing a" globeof molten glass in a -mold withridges producing relatively thin readilybreakable :portions surrounding the globe,

separating said:globe.into sections to-expose the interior faces thereoffor ornamenting such as :sand blastingzand painting and subsequently"con- :necting the sections to prevent exposure of the interiorornamenting.

4. 3A .mold 'for .blowing glass globes including pivoted sectionszhaving:coacting cavities, a base :on whichsaidsections are :mounted, said sec--tionszhavingzcoacting :recessesiorming 1 a groove, and a ring mountedin said groove and having an annular groove producing ridges projectinginwardly, said ring comprising a stationary section mounted on the baseand a movable section coacting with the stationary section.

5. A mold for blowing glass globes including pivoted sections havingcoacting cavities, a base on which said sections are mounted, saidsections having coacting recesses forming a groove, and a ring mountedin said groove and having an annular groove producing ridges projectinginwardly, said ring comprising a stationary section mounted on the baseand a movable section coacting with the stationary section, said movablesection having slidable connection with the base and coacting with theother section at the neck of the mold and globe to be produced thereby,and means for holding the sections of the mold in closed position.

.6. A mold for blowing glass globes including pivoted sections, havingco-acting cavities, a base on which said sections are mounted, saidsections having co-acting recesses forming a groove, a ring mounted insaid groove and having at least one interior groove to produce anannular rib in and surrounding the globe blown therein, said ringcomprising a stationary section mounted on the base and a slidablesection co -acting with the stationary section and adapted to bedisplaced from globe after the sections are opened to permit withdrawalof the globe from the mold.

'7. A mold for blowing glass globes including separable sections havingco-acting cavities, a base for said sections, said sections havingcoacting recesses forming a groove, a ring mounted in said groove andhaving at least one interior groove to produce an annular rib in andsurrounding the glass globe blown therein, said ring comprisingseparable sections at least one of which is displaceable after thesections are opened to permit withdrawal of the globe from the mold.

8. A mold of the class'described including sections with an interiorcavity and having an interior irregularity in its cavity forming anannular groove at the juncture of its sections and icontiguous with theline of separation thereof to obstruct the flow of the molten glassthereover during the blowing operation to provide a relatively thin wallportion which is readily breakable for dividing the globe into sections,and an interiorly grooved separable ring in said groove projectinginwardly of the cavity wall of the mold at points to form connectingflanges on the globe sections to permit subsequent connecting thereofand permit separation of the sections of th mold to remove the globetherefrom.

9. A mold comprising hinged sections with an interior groove and aseparable-grooved ring in said groove with projections on either sidethereof projecting inwardly of the cavity wall of the mold at thejuncture of the sections contiguous with the line of separation of thesections and on either side thereof, forming an obstruction to the flowof the molten glass in flowing over the same during the blowingoperation to form connecting flanges on the mold sections at the readilybreakable points of the globe when the latter is separated.

10. A mold for blowing glass globes including pivoted sections havingco-acting cavities to form a globe having a neck, a base on which saidsections are mounted, said sections having co-acting recesses in theirco-acting faces extending to the cavity wall forming a groovesurrounding the globe and bisecting the neck thereof longitudinally, anda separable ring mounted in said groove with at least one displaceablesection and having an interior annular groove and inwardly projectingridges on each side thereof and of the normal wall of the globe to formreadily breakable points for separating the globe into sections andinwardly projecting flanges adapted to abut each other when the globesections are placed together for connection.

11. A mold for shaping glass globes, including partible side sectionsrecessed in their opposed faces, and partible curved sections disposedbetween said sections and circumferentially of the space between theside sections, the said sections cooperating to form a mold cavity.

12. A mold for shaping glass globes, including partible side sectionsrecessed in their opposed faces, partible curved sections disposedbetween said sections and circumferentially of the space between theside sections, the said sections cooperating to form a mold cavity, andat least one of the sections having its inner wall radially offset alonga line peripheral to said space.

13. A mold for shaping glass globes, including partible side sectionsrecessed in their opposed faces, partible curved sections disposedbetween said 'sections and circumferentially of the space between theside sections, the said sections cooperating to form a mold cavity, andthe intermediate sections being radially offset at their lines ofjuncture with the side sections.

14. A mold for shaping glass globes, including partible side sectionsrecessed in their opposed faces, radially-divided curved sectionsdisposed between said sections and circumferentially of the spacebetween the side sections, the said sections cooperating to form a moldcavity.

JOHN C. SMITH.

